I have an octo 3.2 GHz 2008 Mac Pro. I have 14 gigs of ram(6x 2gig, 2x 1gig sticks) and they are in the correct order/positions/pairings. My machine would properly show me as having 14gigs of ram for the last 9 months that I've had it however I recently installed windows 7 to one of the hard drives in my machine which proceeded to show me as having 12gigs of ram. When I would go back to OSX it changed to show me as having 12gigs of ram just as Win7 did. When I unplugged all the extra 2gig sticks I had purchased from OWC and powered on, then off and reinstalled the ram, I got the 14gigs to show again in OSX. However, as soon as I went back to Win7 and then back to OSX I was down to 12 gigs. Does anyone else have this issue or know a solution? Any assistance would be greatly appreciated as I am out of ideas and am tired of opening my machine up over and over again.